Journal-box jack



(No Model.)

' J. P. WHITNEY.

JOURNAL BOX JACK.

No, 593,063. Patented Nov, 2,1897.

Edy. J. 2

Jmeamwg .251 his ditiomqy MUQM UNITED STATES PATENT tribe,

JAMES F. WHITNEY, OF HARTFORD, CONNECTICUT.

JOU RNAL-HBOX JACK.

SPECIFICATION forming part of Letters Patent No. 593,063, dated November2, 1897.

Application filed November 4, 1896.

To (ct/35 whom it may concern.

Be it known that 1, JAMES F. WHITNEY, a citizen of the United States,residing in Hartford, in the county of Hartford and State ofConnecticut, have invented certain new and useful Improvements inJournal-Box Jacks, of which the following is a specification.

This invention relates to journal-box jacks; and it has for its mainobject the provision of an implement by means of which the upper half ofa journal-box may be removed from the bearing or support in which it ismounted.

As is well known, when it becomes necessary to remove a journal-box fromthe bearing of a machine-tool for the purpose-of re.- newing thejournal-surface, or for any other reason, it is customary for theoperator to dislodge the upper half of the box from its position bystriking the same repeatedly until the box is loosened suificiently topermit him to withdraw it from its bearing or support, but this methodof removing journalboxes is very unsatisfactory in actual practice forthe reason that the journal-box is usually held so firmly by the Wallsof the bearing or support that it is extremely difficult to remove thebox, especially when there is but little room at the ends of the journalor the box is of very large size and hence of considerable weight.

The implement embodying this invention and forming the subject-matter ofmy present application is especially designed and intended as a simpleand efiective device for removing the upper halves of the journalboxesof all sizes and weights, irrespective of the positions of adjacentparts of the machines or mechanisms of which they form parts.

In the drawings accompanying and forming part of this specification,Figure 1 is a side elevation of a portion of a machine-tool, showing myjournal-box jack'in operative position for removing the upper half of ajournal-box therefrom. Fig. 2 is a side elevation of the operating-leverof the device, illustrated 011 an enlarged scale. Fig. 3 is a frontelevation of the same. Fig. 4c is an enlarged plan of the holding deviceof the jack, illustrated on an enlarged scale and in operative relationwith the upper half of a j ournal-box; and Fig. 5 is a detail sideelevation of said holding device.

Serial No. 611,015. (No model.)

Similar characters designate like parts in all the figures of thedrawings.

In the preferred construction I make use of a holding device adapted tobe placed between and to bind against the inner Walls of the channelusually formed in the upper side of the upper half of a journal-box andto employ in connection with this holding device an operating-lever forlifting the holding device when it is desired to dislodge the box andremove the same from the shaft. This operating-lever may be pivotallyconnected with the holding device and will be pivoted to a fulcrum-rodin such a manner as to exert upon the journal box a leverage sufficientfor readily withdrawing the same from its support.

This journal-box jackmay be considered as comprising two main members,one of which is in the nature of an operating device and is designatedin a general way by A, while the other constitutes a holding device andis represented in the same manner by C. Each of these main portions ofthe jack may, l1owever, and usually will, be composed of a number ofparts, the'operatin g device in the pres ent instance consisting of alever L, having at its Working end an eye or loop, such as Z, by meansof which the lever is operatively connected with the holding device.This loop may be of any desired construction, but in the present case itis a simple bent-wire eye supported on opposite ends of a stud 2 carriedby the lever. This lever also has a pivotal connection with afulcrumrod, such as p, in order to permit the jack to be used in closeproximity to those working parts of the machine-tool which are adjacentto the journal thereof. This rod is preferably adjustable, so as toadapt the same to different sizes of tools-that is'to say, to differentheights of the journal-boxes of such tools from the base 3 thereof. Inthe present case the rod 19 is made up of two members, one of which isin the form of an upright or stem 3', having its lower end bored andscrew-threaded for the reception of an adjustable member 4, which isalso screw-threaded and is seated in the bored end of the main stem.

It will be obvious that by turning the member i in the one direction orthe other the rod as a whole may be lengthened or shortened,

as may be necessary, and the lever L brought into proper position withrespect to the journal-box which is to be raised. When in its properposition, the member 4 may be locked against movement by means of aclampingnut 5, carried thereon and adapted to bind against the lower endof the main stem 3.

The connection between the rod 19 and the lever L may be eifected in anysuitable mannor, the rod in this instance having its upper end.bifurcated, and a pin 6 passed through projecting from the opposite sideof the car-' rier 8, this latter clampingscrew being designated by 9".The clamping-screws employed in the construction illustrated are in theform of machine screws having their heads so shaped that at least one ofthem may he turned by means of a wrench or similar tool to tighten theholding device in its working position and to remove the same from thejournal-box. In this instance the screw 9 has a square head which can begrasped by the jaws of the wrench, while the screws 9 and 9 havepolygonal heads so shaped as to permit the screws to be manipulated bythe fingers of the operator. All threev of these screws will preferablyhave their heads cupped, so as to enable them to grip firmly and bindagainst the walls 12 and 12 of the journal-box, such as B, between whichwalls the holding device is intended to be inserted.

For the purpose of connecting the holding device with the loop 1 of theoperating device the carrier 8 will usually have a strong hook, such as13, integral therewith and rising therefrom transversely to theclamping-screws in such a position, as to permit the jack to exert astraight pull upon the holding device, substantially in the centralvertical line connecting the hook and the body portion of the hold ingdevice.

The operation of my journal-box jack is as follows: The heads of thescrews 9 and 9 are first adjusted, if necessary, so as to bring thegripping-faces of the heads into the same plane, and then the holdingdevice is inserted between the walls 12 and 12' at. the sides of theusual channel in the upper side of the upper half of the journal-box,and when the screw 9". has been turned by hand until the heads of thescrews are in engagement with said walls a wrench or similar implementis applied to the head of the screw 9 and the latter is turned until theheads of all the screws bind tightly against the walls 12 and 12 and thescrew 9 can be turned no farther. Thereupon the loop 1 is slipped underthe hook 13 of the carrier 8, as shown in Fig. 1, and the lower end 4 isplaced in position to impinge against the face of the bed of themachine-tool, from which the journal-box is to be removed, this bedbeing designated herein by F. The sharp points .of the supplemental stempermits the operator to obtain a firm hold upon a fixed portion of themachine, and it will be evident that by exerting a suitable pressureupon the handle of the lever L the upper half of the journal-box will belifted away from the shaft S of the machine-tool and out of engagementwith the support of the block P, in which the journalbox is mounted.

It will be apparent from the foregoing that the journal-box jackconstituting my present invention forms a Very effective and simple toolfor readily removing journal-boxes from their supports, and that byitsuse the operator may take out the journal-box without difficulty andwithout risk of injury by the sharp edges of the journahbox or adjacentparts of the mechanism.

Having described my invention, I claim- 1. In a journal-box jack, thecombination of a carrier and oppositely-disposed journalbox-holdingclamping-screws working in said carrier, at least one of saidclamping-screws having polygonal sides adapted to be engaged by awrench.

2. In a journal-box jack, the combination of a carrierhaving a hook, andoppositelydisposed journal boX holding clampingscrews working in saidcarrier, at least one of said clamping-screwshaving polygonal sidesadapted to be engaged by a wrench,

3. In a journal-box jack, the combination of a carrier andoppositely-disposed journalbox-holding clamping-screws 'working in saidcarrier and disposed transversely to said hook, at least one of saidclamping-screws having polygonal sides adapted to be engaged by awrench.

4.. In a journal-box jack, the combination of a carrierandoppositely-disposed journalbox-holding clamping-screwsv working in saidcarrier, at least one of said clamping-screws having polygonal sidesadapted to be engaged by awrench, said screws having cupped ends forengaging the walls of the journal-box.

JAMES F. WHITNEY.

Witnesses:

FRED. J. DOLE, BENTON N. PARKER.

